LAN Switching and Wireless

121. A _________ is defined as a small, fixed-size block of information.

1. frame
2. packet
3. cell
4. none of the above

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122. A _________ is the end-to-end portion of the network between two STS multiplexers.

1. section
2. line
3. path
4. none of the above

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123. A _________ is the optical link connecting two neighbor devices.

1. section
2. line
3. path
4. none of the above

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124. A _________ is the portion of the network between two multiplexers.

1. section
2. line
3. path
4. none of the above

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125. A _________ LAN allows several LANs to be connected.

1. backbone
2. wireless
3. wired
4. none of the above

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126. A _________ network is a cross between a circuit-switched network and a datagram network. It has some characteristics of both.

1. virtual-circuit
2. packet-switched
3. frame-switched
4. none of the above

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127. A _________ network is made of a set of switches connected by physical links, in which each link is divided into n channels.

1. line-switched
2. frame-switched
3. circuit-switched
4. none of the above

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128. A _________ normally connects LANs and WANs in the Internet and has a table that is used for making decisions about the route.

1. repeater
2. bridge
3. router
4. none of the above

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129. A _________ regenerates a signal, connects segments of a LAN, and has no filtering capability.

1. repeater
2. bridge
3. router
4. none of the above

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130. A _________ sine wave is not useful in data communications; we need to send a _________ signal.

1. composite; single-frequency
2. single-frequency; composite
3. single-frequency; double-frequency
4. none of the above

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